The original cast of High School Musical 3 is currently en route to Utah to begin filming the third installment of the hit Disney franchise, but the head honchos are already thinking of a fourth film. Cha-ching!

Disney Channel Worldwide president Rich Ross says writers are already at work on another sequel, but admits the stars’ growing pricetags means it’s likely a new crop of fresh-faced teens will take their place.

This all, of course, depends entirely on the ticket sales of HSM 3 when it hits theatres in October.

Meanwhile, Disney is certain that it’s found its next big thing for the tween market in Demi Lovato. The 15-year-old Texan is starring in a slew of new flicks this year, including Camp Rock with the Jonas Brother.